Finding the Third Proportional to 59,987.25 and 91,516.50

Step by Step Solution

1. Step 1: Write the proportion equation
   59,987.25 : 91,516.50 = 91,516.50 : x
2. Step 2: Convert to fraction form
   59,987.25/91,516.50 = 91,516.50/x
3. Step 3: Cross multiply
   59,987.25x = 91,516.50 × 91,516.50
4. Step 4: Simplify right side
   59,987.25x = 8,375,269,772.25
5. Step 5: Solve for x
   x = 8,375,269,772.25/59,987.25
6. Step 6: Final answer
   x = 139,617.50